Android U Beta 1 GPL
Merge remote-tracking branch 'aosp/upstream-main' into aosp/master

* aosp/upstream-main:
  cosmetics,fix a typo: compresion -> compression
  vp9_level_stats,Vp9LevelRow: fix -Wc++20-compat warnings
  Vp9LevelTable: fix initializer order
  Mark static const class/struct members as constexpr.
  CuePoint::TrackPosition::Parse: validate m_block
  added Seek() function to FileReader
  Android.mk: add a check for NDK_ROOT

Change-Id: I4c487400ff330d5126d0efb49c1e09bfeec529ae
Test: atest ExtractorUnitTest -- --enable-module-dynamic-download=true